Perovskite/Graphene Solar Cells without a Hole-Transport Layer
Perovskite/Graphene Solar Cells without a Hole-Transport Layer
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DOI：
10.1021/acsaem.8b01606
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发表时间：
2019-01-01
影响因子：
6.4
通讯作者：
Tsuboi, Nozomu
中科院分区：
文献类型：
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作者：
Ishikawa, Ryousuke;Watanabe, Sho;Tsuboi, Nozomu
本研究的目的是利用石墨烯的独特特性提高钙钛矿太阳能电池的稳定性，以促进此类太阳能电池的广泛应用，例如在多结器件中。因此，我们开发了一种使用真空层压的石墨烯新转移方法，并使用石墨烯成功制造了不需要空穴传输层的钙钛矿太阳能电池。初步稳定性测试表明，新器件比使用 spiro-OMeTAD 的对照钙钛矿太阳能电池具有更好的稳定性。尽管新的太阳能电池设计表现出比对照更差的电池性能，但我们通过建模确定可以通过修改钙钛矿和石墨烯之间的界面态或通过调节石墨烯的功函数来提高其性能。
This study was conducted with the objective of improving the stability of perovskite solar cells by using the unique characteristics of graphene in order to facilitate the widespread application of such solar cells, for example, in multijunction devices. We consequently developed a new transfer method for graphene using vacuum lamination and, using graphene, successfully fabricated a perovskite solar cell that does not require a hole-transport layer. Initial stability tests indicated that the new device has better stability than a control perovskite solar cell using spiro-OMeTAD. Although the new solar cell design exhibited poorer cell performance than the control, we determined via modeling that its performance can be improved by modifying the interface state between perovskite and graphene or by modulating the work function of graphene.